Change installer scripts to prefer system-wide installation in /usr/local/bin, warn about user bin precedence, and offer to remove user bin versions after successful system installation

install-git-credential-manager.sh

@@ -16,6 +16,7 @@ NC='\033[0m' # No Color
 # Configuration
 GITHUB_REPO="git-ecosystem/git-credential-manager"
 INSTALL_DIR="/usr/local/bin"
+USER_BIN_DIR="$HOME/bin"
 TEMP_DIR="/tmp/gcm-install"
 
 # Function to print colored output
@@ -451,6 +452,19 @@ verify_installation() {
         # Check all presets
         configure_git_presets
 
+        # Check for user bin version and offer removal
+        if [[ -f "$USER_BIN_DIR/git-credential-manager" ]]; then
+            print_warning "Found git-credential-manager in user bin directory ($USER_BIN_DIR)"
+            print_status "This might take precedence if $USER_BIN_DIR is in PATH before system paths"
+            echo
+            read -p "Would you like to remove the user bin version? (y/N): " -n 1 -r
+            echo
+            if [[ $REPLY =~ ^[Yy]$ ]]; then
+                rm -f "$USER_BIN_DIR/git-credential-manager"
+                print_success "Removed user bin version"
+            fi
+        fi
+
         return 0
     else
         print_error "git-credential-manager installation verification failed"